{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:MOIKIQATYLRBUQDTPQVWSIGAM3","short_pith_number":"pith:MOIKIQAT","canonical_record":{"source":{"id":"2301.12992","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-30T15:34:21Z","cross_cats_sorted":[],"title_canon_sha256":"7ad84c4e6df37fb539694af23a9cad2cdc48aad352f89efe5a1e0b4b8ec031b6","abstract_canon_sha256":"4638f78bcabd4ec962d36f02855c6cbbf7f915d507dd76affaa2b41b16b0680b"},"schema_version":"1.0"},"canonical_sha256":"6390a44013c2e21a40737c2b6920c066c228c8be7b4257e3d3e4faa42412f30a","source":{"kind":"arxiv","id":"2301.12992","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.12992","created_at":"2026-07-05T05:37:57Z"},{"alias_kind":"arxiv_version","alias_value":"2301.12992v1","created_at":"2026-07-05T05:37:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.12992","created_at":"2026-07-05T05:37:57Z"},{"alias_kind":"pith_short_12","alias_value":"MOIKIQATYLRB","created_at":"2026-07-05T05:37:57Z"},{"alias_kind":"pith_short_16","alias_value":"MOIKIQATYLRBUQDT","created_at":"2026-07-05T05:37:57Z"},{"alias_kind":"pith_short_8","alias_value":"MOIKIQAT","created_at":"2026-07-05T05:37:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:MOIKIQATYLRBUQDTPQVWSIGAM3","target":"record","payload":{"canonical_record":{"source":{"id":"2301.12992","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-30T15:34:21Z","cross_cats_sorted":[],"title_canon_sha256":"7ad84c4e6df37fb539694af23a9cad2cdc48aad352f89efe5a1e0b4b8ec031b6","abstract_canon_sha256":"4638f78bcabd4ec962d36f02855c6cbbf7f915d507dd76affaa2b41b16b0680b"},"schema_version":"1.0"},"canonical_sha256":"6390a44013c2e21a40737c2b6920c066c228c8be7b4257e3d3e4faa42412f30a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:37:57.627604Z","signature_b64":"d+sRrPnuFw9Rk0nFY8vrVw4uHt7fjadm5TDWsZJAtgRg47TzRhKffL0/CjnH6zyLal9Vqbz1vkMP815rxG3hDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6390a44013c2e21a40737c2b6920c066c228c8be7b4257e3d3e4faa42412f30a","last_reissued_at":"2026-07-05T05:37:57.626997Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:37:57.626997Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2301.12992","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:37:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1LoZmwX5LIu3S09NjBTGoU+lrwF5a+paLu6KH3V7Q22P0wCCZyRxP73UAKFzxJ1robqwQchj8j6dswwJm8WgCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T21:14:51.913428Z"},"content_sha256":"74387aabfb2116db754afad4af4215dd186d705070b39b82cf518c82f91883c8","schema_version":"1.0","event_id":"sha256:74387aabfb2116db754afad4af4215dd186d705070b39b82cf518c82f91883c8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:MOIKIQATYLRBUQDTPQVWSIGAM3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evolved cataclysmic variables as progenitors of AM CVn stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Arnab Sarkar, Christopher A. Tout, Hongwei Ge","submitted_at":"2023-01-30T15:34:21Z","abstract_excerpt":"We model cataclysmic variables (CVs) with solar metallicity donors ($X=0.7,\\:Z=0.02$) that evolve to form AM CVn stars through the Evolved CV formation channel using various angular momentum loss mechanisms by magnetic braking ($\\mathrm{AML_{MB}}$). We find that the time-scale for $\\mathrm{AML_{MB}}$ in our double-dynamo (DD) model is shorter than that of previously used empirical formulae. Owing to the shorter time-scales, a larger parameter space of initial conditions evolves to form AM CVn stars with the DD model than with other models. We perform an analysis of the expected number of AM CV"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.12992","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2301.12992/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:37:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AkBxh9yHtC+KKUv6BAoM4H0WC/1S3TA2fofYqCtFAfNQhNkWMLWBeMpF/e7vd5nLjwxJ3OzmpkiR37ogSIikAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T21:14:51.913921Z"},"content_sha256":"d0b08d6933d8567b44b63bb6d8253229ae4a87679d56ca382f291bb26618dde7","schema_version":"1.0","event_id":"sha256:d0b08d6933d8567b44b63bb6d8253229ae4a87679d56ca382f291bb26618dde7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MOIKIQATYLRBUQDTPQVWSIGAM3/bundle.json","state_url":"https://pith.science/pith/MOIKIQATYLRBUQDTPQVWSIGAM3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MOIKIQATYLRBUQDTPQVWSIGAM3/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-09T21:14:51Z","links":{"resolver":"https://pith.science/pith/MOIKIQATYLRBUQDTPQVWSIGAM3","bundle":"https://pith.science/pith/MOIKIQATYLRBUQDTPQVWSIGAM3/bundle.json","state":"https://pith.science/pith/MOIKIQATYLRBUQDTPQVWSIGAM3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MOIKIQATYLRBUQDTPQVWSIGAM3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:MOIKIQATYLRBUQDTPQVWSIGAM3","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"4638f78bcabd4ec962d36f02855c6cbbf7f915d507dd76affaa2b41b16b0680b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-30T15:34:21Z","title_canon_sha256":"7ad84c4e6df37fb539694af23a9cad2cdc48aad352f89efe5a1e0b4b8ec031b6"},"schema_version":"1.0","source":{"id":"2301.12992","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.12992","created_at":"2026-07-05T05:37:57Z"},{"alias_kind":"arxiv_version","alias_value":"2301.12992v1","created_at":"2026-07-05T05:37:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.12992","created_at":"2026-07-05T05:37:57Z"},{"alias_kind":"pith_short_12","alias_value":"MOIKIQATYLRB","created_at":"2026-07-05T05:37:57Z"},{"alias_kind":"pith_short_16","alias_value":"MOIKIQATYLRBUQDT","created_at":"2026-07-05T05:37:57Z"},{"alias_kind":"pith_short_8","alias_value":"MOIKIQAT","created_at":"2026-07-05T05:37:57Z"}],"graph_snapshots":[{"event_id":"sha256:d0b08d6933d8567b44b63bb6d8253229ae4a87679d56ca382f291bb26618dde7","target":"graph","created_at":"2026-07-05T05:37:57Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2301.12992/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We model cataclysmic variables (CVs) with solar metallicity donors ($X=0.7,\\:Z=0.02$) that evolve to form AM CVn stars through the Evolved CV formation channel using various angular momentum loss mechanisms by magnetic braking ($\\mathrm{AML_{MB}}$). We find that the time-scale for $\\mathrm{AML_{MB}}$ in our double-dynamo (DD) model is shorter than that of previously used empirical formulae. Owing to the shorter time-scales, a larger parameter space of initial conditions evolves to form AM CVn stars with the DD model than with other models. We perform an analysis of the expected number of AM CV","authors_text":"Arnab Sarkar, Christopher A. Tout, Hongwei Ge","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-30T15:34:21Z","title":"Evolved cataclysmic variables as progenitors of AM CVn stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.12992","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:74387aabfb2116db754afad4af4215dd186d705070b39b82cf518c82f91883c8","target":"record","created_at":"2026-07-05T05:37:57Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"4638f78bcabd4ec962d36f02855c6cbbf7f915d507dd76affaa2b41b16b0680b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-30T15:34:21Z","title_canon_sha256":"7ad84c4e6df37fb539694af23a9cad2cdc48aad352f89efe5a1e0b4b8ec031b6"},"schema_version":"1.0","source":{"id":"2301.12992","kind":"arxiv","version":1}},"canonical_sha256":"6390a44013c2e21a40737c2b6920c066c228c8be7b4257e3d3e4faa42412f30a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6390a44013c2e21a40737c2b6920c066c228c8be7b4257e3d3e4faa42412f30a","first_computed_at":"2026-07-05T05:37:57.626997Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:37:57.626997Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d+sRrPnuFw9Rk0nFY8vrVw4uHt7fjadm5TDWsZJAtgRg47TzRhKffL0/CjnH6zyLal9Vqbz1vkMP815rxG3hDA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:37:57.627604Z","signed_message":"canonical_sha256_bytes"},"source_id":"2301.12992","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:74387aabfb2116db754afad4af4215dd186d705070b39b82cf518c82f91883c8","sha256:d0b08d6933d8567b44b63bb6d8253229ae4a87679d56ca382f291bb26618dde7"],"state_sha256":"9e2adebcfaefae0285a0d06cd9b81434c42f9189e3657a10c804b4e27fdf38f6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NJpxi6JlyoGS6lHSnO6nN3SOSZ2+YTupJCIUgW53zbuQn4rvn27MMxqqkL9C+9bZNTl4YczQu1So6MeLvFz7Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T21:14:51.917759Z","bundle_sha256":"0e807b741c6804056f1064ce9b58fe083e8a2b2b5dcc1aeb81e006d46bb90eb4"}}